Time-frequency and time-frequency-rate representations using the cross quadratic spectrum

• Main Author: Saman S Abeysekera
• Other Authors: School of Electrical and Electronic Engineering
• Format: Conference or Workshop Item
• Language: English
• Published: 2013
• Subjects: DRNTU::Engineering::Electrical and electronic engineering
• Online Access: https://hdl.handle.net/10356/99082; http://hdl.handle.net/10220/17621
• Institution: Nanyang Technological University

Traditionally used time-frequency distributions such as the STFT and the WVD are not suitable for FM signal characterization at low SNRs. A new method is proposed using the cross quadratic spectrum (XQS) which provides accurate temporal characterization for both signal's instantaneous frequency and the instantaneous-frequency-rate.